Encyclopedia

Periodic Table of the Elements: Promethium
Atomic Number:61
Atomic Symbol:Pm
 Promethium
Atomic Weight:(145)
Electron
Configuration:
2 · 8 · 18
23 · 8 · 2
periodic table

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

More on Periodic Table of the Elements Promethium from Fact Monster:

See more Encyclopedia articles on: Compounds and Elements